Generated H₂O, ¹²CO₂, and ¹³CO₂ spectra for the models with gas inside a 5 AU cavity, but no inner disk (left column) or an 0.5 AU inner disk inside a 5 AU, completely empty cavity (right column). The gas and dust inside the cavity or the inner disk are depleted by factors of 10³, 10⁴, and 10⁵ (first, second, and third rows respectively). The fourth row shows, in both panels, the fiducial model with a 5 AU cavity, where the cavity is completely empty. The vertical colored bars indicate the integration ranges for the H₂O 15.17 and 17.22 µm flux (blue), as well as the ¹²CO₂ and ¹³CO₂ Q-branches (green and purple, respectively).